Series:	--
Part Status:	Active
Main Purpose:	DC/DC Converter
Outputs and Type:	1, Isolated
Power - Output:	1W
Voltage - Output:	5V
Current - Output:	--
Voltage - Input:	4.5 V ~ 5.5 V
Regulator Topology:	--
Frequency - Switching:	--
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	DCPA10505

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Introduction to DCPA10505EVM-861 Evaluation Board

The DCPA10505EVM-861 evaluation board is a versatile board designed to evaluate multiple topologies and performance characteristics of power supply designed with Power Integrations’ DCPA10505 primary side switcher IC. It is an excellent platform to test mosfet ratings, regulate efficiency, and compare different topologies for power supplies before embarking on a design project.

DCPA10505EVM-861 Applications

The DCPA10505EVM-861 evaluation board is ideal for basic, offline DC/DC converter designs. It helps in the evaluation of a wide range of topologies and performance characteristics of the Power Integrations’ DCPA10505 primary side switcher IC. These include boost topologies, buck-boost topologies, flyback topologies, and forward converter topologies.The DCPA10505EVM-861 board is also suitable for evaluation of AC/DC switching supplies. The integrated off-line controller, IC1, is optimized to drive switches with operations ranging from 60V to 400V, and frequencies up to 20kHz.

Applications of DCPA10505EVM-861 Evaluation Board

The DCPA10505EVM-861 evaluation board can be used in a variety of applications, such as:

• Power supplies for notebook computers, LCD monitors, set-top boxes, and other consumer electronics
• Replacement for linear transformer-based switching supplies
• Low power LED lighting supplies
• Uninterruptible power supplies (UPS)
• Industrial motor drives

DCPA10505EVM-861 Working Principle

The DCPA10505EVM-861 board includes a primary-side controller, IC1, an external MOSFET switch, Q1, and an output inductor, L1. The DCPA10505EVM-861 uses high-frequency DC/DC conversion to produce a regulated output voltage or current. The output power stage contains two main components: the MOSFET switch and the output inductor.The MOSFET switch, Q1, is driven by a pulse width modulation (PWM) signal generated by IC1. When the switch is turned on, inductor L1 stores energy in its magnetic field. When the switch is turned off, energy is released from the magnetic field, thereby creating a DC output voltage or current.The power converter feedback controller, IC1, can automatically adjust parameters such as frequency, duty cycle, and slew rate to maintain a regulated output voltage or current. It can also respond to input current and output voltage interrupts, ensuring optimal performance in situations where the input voltage, output voltage, or environmental conditions change.

Conclusion

The DCPA10505EVM-861 evaluation board offers a powerful, with comprehensive flexibility, platform for the evaluation and development of DC/DC and AC/DC power supplies. It is designed to help engineers better understand the performance and characteristics of Power Integrations’ DCPA10505 primary side switcher IC, and ultimately aid in developing an optimized power solution for a given application.

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